Q: Is 1,338,624 a Prime Number?
A: No, 1,338,624 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1338624 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 64 72 83 84 96 112 126 128 144 166 168 192 224 249 252 256 288 332 336 384 448 498 504 576 581 664 672 747 768 896 996 1,008 1,152 1,162 1,328 1,344 1,494 1,743 1,792 1,992 2,016 2,304 2,324 2,656 2,688 2,988 3,486 3,984 4,032 4,648 5,229 5,312 5,376 5,976 6,972 7,968 8,064 9,296 10,458 10,624 11,952 13,944 15,936 16,128 18,592 20,916 21,248 23,904 27,888 31,872 37,184 41,832 47,808 55,776 63,744 74,368 83,664 95,616 111,552 148,736 167,328 191,232 223,104 334,656 446,208 669,312 and 1,338,624, with no remainder.
Since 1,338,624 cannot be divided by just 1 and 1,338,624, it is not a prime number.